#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2009 Doug Hellmann.  All rights reserved.
     #
     """Generate a traceback
     """
     #end_pymotw_header
     
     def func1(arg1):
         local_var = arg1 * 2
         return func2(local_var)
     
     def func2(arg2):
         local_var = arg2 + 2
         return func3(local_var)
     
     def func3(arg3):
         local_var = arg2 / 2
         return local_var
     
     func1(1)